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| MATHEMATIC MODEL FOR FORMABILITY CRITERIA OF SUPERPLASTIC AIR BULGING COMPONENTS |
| WANG Chunrong;SONG Hailong;QU Li;CAO Shuzhi Institute of Metal Research; Academia Sinica; Shenyang WANG Chunrong}; associate professor; Institute of Metal Research; Academia Sinica;Shenyang 110015 |
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Cite this article:
WANG Chunrong;SONG Hailong;QU Li;CAO Shuzhi Institute of Metal Research; Academia Sinica; Shenyang WANG Chunrong}; associate professor; Institute of Metal Research; Academia Sinica;Shenyang 110015. MATHEMATIC MODEL FOR FORMABILITY CRITERIA OF SUPERPLASTIC AIR BULGING COMPONENTS. Acta Metall Sin, 1989, 25(6): 152-155.
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Abstract A proposal for two types of press close to die, Including blanks coming in dieand covering die, and four criteria for mability is put forward in the study of the superplasticair bulge forming of the metallic thin wall components. A dimensionless weigh mathematicmodel for the criteria of superplastic air bulge forming was developed to be: Q_w=1.56WS/HF+2.37(θ-φ)π/180-r/r_0+0.19The superior formability of components is approaching if Q_W≥1, and the worse, if Q_W<1. Itwas confirmed by practice that the above mentioned model is with more accuracy.
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Received: 18 June 1989
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